Г) 1/4*(5-х)=-1/3*(2х-15) д)1 целая 1/3*(2у+5)=1/2*(3у+25) е)-0,2*(х-2)=0,5*(х-5)

1/4 * (5-x) = -1/3*(2x-15)
5/4 - 1/4x = -2/3x + 5
-1/4x + 2/3x = 5- 5/4
-3/12x + 8/12x = 3.75
5/12x = 3.75
x= $3\frac{3}{4} / \frac{5}{12}$
x = $\frac{15}{4} / \frac{5}{12}$
x= $\frac{15}{4} * \frac{12}{5}$
x=9

1 1/3 *(2y+5) = 1/2 (3y+25)
4/3 (2y+5) = 3/2y + 25/2
8/3y+20/3 = 3/2y + 25/2
8/3y - 3/2y = 25/2 - 20/3
16/6y - 9/6y = 75/6 - 40/6
7/6y=35/6
y= 35/6 * 6/7
y= 5

-0.2*(x-2) = 0.5*(x-5)
-0.2x+0.4 = 0.5x- 2.5
-0.2x-0.5x=-2.5-0.4
-0.7x=-2.9
x= -2.9/-0.7
x= 1.14